Ventilator and dust-arrester.



Patented July 23, l90l.

B. F. CLARKE, VENTILATOR AND DUST ARRESTEB.

(Application filed Oct. 17, 1900.) (No Modei.) 2 Sheets-Sheet l.

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No. 679,I08. Patented July 23, MIL

' B. F. CLARKE. VENTILATUR AND DUST ABRESTER,

(Application filed Oct. 17, 1900.) I (No Model.) 2 Sheets-Sheet 2.-

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NIT-ED STATES PATENT OFFICE.

BENJAMIN F. CLARKE, OF sAN FRANCIsCo, CALIFORNIA.

' VENTIL ATOR AND DUST-ARRESTER.

SPECIFICATION forming part of Letters Patent N0. 679,'108, dated July23, 1901. Application filed October 17, 1900. Serial No. 33,317. (Nomodel.)

To all whom it may concern:

Be it known that I, BENJAMIN F. CLARKE, a citizen of the United States,residing in the city and county of San Francisco, State of California,have invented an Improvement in Ventilators and Dust-Arresters; and Ihereby declare the following to be a full, clear, and exact descriptionof the same.

My invention relates to an improved carventilator, whereby air cleansedof its impurities and cooled is admitted to the car.

It consists of an air-inlet, a water-chamber, a governing device 'bywhich the end of the air-inlet is automatically lowered into orwithdrawn from the water, a cooling-chamber through which theair passesbefore entering the car, and of details more fully to be set forth inthe following specification and accompanying drawings, in which Figure 1is a longitudinal section on the line a: m, Fig. 2, of my improvedventilator dustarrester. Fig. 2 is a horizontal section on the line g yof Fig. 1. Fig. 3 is a modification of my invention. Fig. 4 is ahorizontal section looking upward on the line 4 4 of Fig. 1.

A represents the roof of a car,through which passes the air-tube 2,having a flange 3 at its lower end and its upper end opening out intothe funnel 4. That this funnel may face in any direction desired Iprovide bearings, in which this funnel-tube is turnable. These bearingshave the parts 5 and 6 secured to the tube, and their counterparts 7 aresecured to the roof. Antifrictional balls run in the races 8. As a guardagainst entry of dust, &c., to these bearings I provide the shields 9upon the parts 5 and 6 or '7. The funnel is intended to face in thedirection of travel or of the air-current. That it may be easily turnedand secured I have shown a handle 10, engaging some well-known form ofdevice, the one herein shown including spacedlugs 11, between which thehandle is pivoted and adapted to be held by a spring at 10 in anappropriate manner. Below the tube 2 and joined thereto by the cap orcollar 12 is a pipe 13, extending into the air-chamber 22 and having aninterior cone-shaped flange 14 at its lower end. There is sufficientplay between the cap 12 and the flanged end of 2 to permit the latter toturn freely. Suspended in 13 is a pipe 15, having a cone-shaped upperend 16. The outer edge of the cone 16 bears upon the interior of thepipe 13, and the edge of the flange 14 bears upon the exterior of pipe15, so that practically an airtight joint is formed, yet allowing a freesliding movement and guidance of the pipes. The pipe 15 is suspended bythe cords 18, suitably attached, as at 17. These cords pass up throughthe pipe 2 and around sheaves 19 and 20 and pass out through slots inopposite sides of the funnel and attach, respectively, to the wings 21.These wings are pivoted upon the edges of the funnel and are underordinary conditions of rest kept extended in a line approximatelycontinuous with the plane of the funnel edge by means of springs, as 21,and lugs 23 upon these wings bearing against the edge of the funnelprevent the wings opening out farther.

The air-chamber 25 is divided into two compartments by the horizontalperforated partition 23. A hole is left in this partition large enoughfor the free vertical movement of pipe 15. Through a door 24, having asuitable packing about its edges, by which the passage-way may be madeair-tight, ice is admitted to the upper compartment 25 when deemednecessary for cooling the air. The lower compartment 26' contains water.As the accumulation of water from the melting ice will be continuous, Iarrange a cook 27 and a float-valve, by which the water is allowed toflow off whenever it rises above a certain point. This valve consists ofthe plate 28, pivoted above the orifice-at 29 and having a lower angularextension 30, attaching to a float 31. As a protection against thejamming of ice against the pipe 15 and its connections I provide a tubeor casing 34, which encircles these parts.

32 is an air-outlet pipe having similar connections as pipes 2 and 13.

At 33 is arranged a gate by which the volume of air to be admitted tothe car is regulated.

The arrangement of the pipe 15, cords 18, and wings 21 is such that whenthe wings are extended the lower end of 15 will be above the water, butas the wings are pressed back against the sides of the funnel the end of15 is submerged.

Thus is seen the principle of operation.

As the funnel will always be turned in the direction of travel, thepressure of the air as the train rushes forward forces the Wings backand permits submergence of the end of the pipe 15. No matter how muchsoot or dust may be taken in through the funnel, this is all arrested inthe water-tank, and the air passes thence through the ice-chamber,cooled and cleansed, into the car.

The object of having a governor by which the pipe 15 is to be raised andlowered is to provide for ventilation when the car'is at rest. Were theair inlet pipe continually submergedand the air not entering under anypressure, the water would act as a seal and no ventilation or draftwould take place; but by the withdrawal of the pipe from the waternatural air-currents efiect the purposes desired.

To prevent dust or cinders collecting in the slidable joint between thepipes 13 and 15, a fixed tube 35 may extend down inside the tube 15, andits upper endmay diverge or be funnel-shaped, as at 36. The outerperiphery of the funnel is hermetically secured to the interior of thepassage 13 above the highest point to which the top of the tube 15 willrise, and it thus directs the dust or cinders down through the interiorof 15 and away from the joint.

The exterior air-inlet 4, as shown in Fig. 1, is independent andturnable with relation to the car; but in building new cars it may, ifdesired, be built into or with the roof of the car at either or bothends. In such a construction as shown in Fig. 3 a movable gate, as 37,serves to close the rear opening when the first one is in use. Theparticular atrangement of the conducting-passages may also depend uponthe interior arrangement of the car or other conditions.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A ventilator consisting of an air-inlet, an air-chamber containingwater, one end of said inlet adapted to be submerged within the water,devices exposed to exterior wind-pressu re for automatically moving theair-inlet with relation to the water in the chamber and means fordelivering the air from the chamber.

2. A ventilator consisting of an air-inlet, an air-chamber containingwater, agoverning device exposed to and actuated by exteriorwind-pressure whereby one end of the air-inlet is automaticallysubmerged in the water, means for cooling the air within the chamber,and a deliverytube leading from the airchamber.

3. A ventilator consisting of a turnableairinlet tube having afunnel-shaped mouth, connections of this tube with an air-chamber, and atube slidable in an extension of the air-inlet tube within the chamber,this slidable tube having a governing device exposed to and actuated byexterior wind-pressure by which said tube is automatically submerged inwater contained in the bottom of the air chamber, and means fordelivering the air from the chamber.

4. Aventilatorcombining an air-inlet tube, bearings in which this tubeis turnable and means for holding the tube in position, an airchamberand a pipe therein to which the lower end of the inlet-tube is turnablyconnected, a tube within the chamber and continuous with the pipe, apipe slidable with relation to the interior tube, a governor by whichthis pipeis automatically submerged in water contained in the lower partof the chamber, means for cooling the air in the chamber, and adelivery-tube leading from the chamber.

5. A ventilator having in combination a turnable air-inlet tube, whoselower end is outwardly flanged, acap joining this tube turnably to atubular projection upon an air chamber, a pipe forming a continuation ofthis tubular projection within the chamber, having on its lower end acone-shaped flange, a pipe slidable in this tube and extending below it,and having a cone=shaped upper end, a governing device by which thispipe is antomatically submerged or Withdrawn from water contained withinthe airchamber, means for regulating this quantity of water, and anair-passage leading from the chamber.

6. A ventilator consisting in the combination of a turnable air-inletconnected with an air-chamber, a pipe slidable in an extension of theair-inlet and within the chamber and devices controlled by the pressureof wind whereby said pipe is adapted to be automatically submerged inwater contained in the bottom of the chamber, ahorizontal perfo ratedpartition in the chamber forming an upper compartment therein andadapted to receive 'a cooling substance as ice, at protecting-caSingabout the above-mentioned pipe, an air-outlet, and means for regulatingthe amount of water in the chamber.

7. In a car-ventilator, the combination of an air-inlet tube having afunnel-mouth projecting without the car, said funnel and tube turnablein the direction of travel, wings hinged upon the edges of the funnel,and

means for distending thein in a plane approxi mately at right angleswith the funnel-mouth, an air-chamber with which the air-tube isturnably connected, a tube within the airchamber and in line with theair-tube, a pipe slidable in this tube and having connections with thewings by which the pipe is submerged in water contained in the bottom ofthe airehamber, when the wings are pressed back against the sides of thefunnel by the pressure of the air upon these wings, asthe car movesforward, wings returning as the airpressure is reduced whereby the pipeis withdrawn from the water, a cooling-compartment within the chamber,an air-discharge outlet and means by which the amount of water in thechamber is regulated.

8. In a car-ventilator, the combination of an air-inlet tube havingafunnel projecting above the roof of the car and turnable in bearingsupon the car, means upon these bearin gs by which the tube is securedwith its funnel in the direction of travel, wings hinged upon the edgesof the funnel having springs by which they are normally retained in aplane approximately transverse to the funnelmouth, an exterior flangeupon the lower end of the inlet-tube, a cap fitting this flange andjoining the tube to the air-chamber, a tube within the chamber in linewith the inlettube havinga cone-shaped flange on the lower edge, a pipeslidable in said tube having a cone-shaped flange upon its upper end,cords by which the pipe is held in suspension, said cords attached tothe outer edges of the wings

